单项选择题
A. Configure backup optimization
B. Configure the channel to increase MAXOPENFILES
C. Configure the channel to increase the capacity with the RATE parameter
D. Configure the channel to adjust the tape buffer size with the BLKSIZE option
多项选择题 The user SYS creates a job by using the following command: Which two statements are true about the job that was created by the preceding command?（）
多项选择题 Which three tasks can be performed using a duplicate database?（）
单项选择题 Examine the CREATE DISKGROUP command used to create a disk group: In which situation would you use this method of disk group creation?（）